Power-transmission device.



PATENTED A .1 A0 A SUHLAGHTBR. M R 01908,

A ToR/VE Ys 3 SHEETS-SHEET 1.

In 1. A,.,. I f

IIIIIIIII APPLIOATION FILED JUNE 24. 1907.

POWER TRANSMISSION DEVICE.

lili Y N SQ N W//NESSFS v PATENTED MAR. 10, 1908.

C A SCHLAGHTBR.

POWER TRANSMISSION DEVICE.

'oATIoN FILED UNI: 4 19 W N W//iw/zzwim /TNEsSgS I f l [NVA/V701?, v

A TTR/wiys No. 881,444. PATENTED. MARIO, 1908.

\ C A." SCHLAGHTER.

POWER TRANSMISSION DEVICE.

APPLICATION FILED JUNE 24.1907.

3 SHEETS-SHEET 3.

Wfl/VL s s55 A TTOR'NE ys UNITED sTATns PATENT oFFroE.

CARL A. soHLAcHTER, or ROCKWELL orrnlowA.

rovina-TRANSMISSION DEVICE.

No..8s1,444.

Specification-of Letters Patent. i

Patented March 10, 1908.l

`Application filed June 24, 1907. Serial No. 380,550.

vTo all 'whomv 'it concern:

vBe it known that I, CARL A. SCHLACHTER, a citizen, of the United States, residing at 4Rockwell City, in the county of Calhoun and its object is to produce a means whereby thev speed of a driven member may be varied at will without varying the speed of the drive member, lthrough the intermediary of a fluid and certain throttling devices whereby the extent of the throttling of the flow of thefluid will determine the slip of the driven member relative to the drive member.

`The invention comprises essentially a fluid chamber in which are rotated vanes or win s fast on the drive member, lwhile the fluid speed. Or4 theiluid may be allowed to flow' t rough adjustably -constricted passages, which Will permit the drive member to move correspondingly faster than the driven mem-` ber, and, consequently,` the` speedv of the driven -member will be to such extent slower than the speed of the drive member.

The invention comprises special means for performingthese various operations and ad- Justments, and also means ,whereby'wear' may be taken up so that there is practically no lost motion between the drive and driven members except that due to the escape of the fiuid through the throttled passages.

The invention also comprises vmeans for equalizing the pressure upon the fluid in such manner that there may be a' certain elasticity of transmission to avoid shocks and jarsto the structure.

The inventionwill be fully understood byA reference to the 'following detailed description, taken in connection with the accompanying drawings fornung part of this specification, in which,'-- l Figure 1 is .a Alongitudinal section of the structure on the line of Fig. 2,-'part's being shown in elevation; Fig. --2 isl a cross end elevation at the ri lit-hand end of the structure as viewed in ig. 1 and Figs. 4, 5,

6 and 7 are detail views. A

Referring to the drawings, there are shown two shafts 1 and 2. One of these shafts is I the driveshaft andthe other is the driven shaft but ythey may be interchangeably so arranged. In the following description the shaft 1 will be considered as the -drive shaft and the shaft 2 will be considered as the driven shaft, with the understanding, however, that the contrary may be the case if so desired. The two shafts 1. and 2 are in alinethe manner hereinafter described."

Mounted upon the shaft 2 is a h ubv 3 secured to said shaft for rotation therewith by -a key 4. The hub 3 carries at one end a disk or cheek plate 4, and said hub has an axial recess 5. The cheek `plate is also formed with an annular recess 6 about the hub, these recesses being formed in the cheek plateand in the'hub on the side remote from the shaft 2 and which 'for convenience may be called the inner side of the cheek late. The recess 6. is formed by stepping bac the cheek plate, and-beyond the ste ped portion of this'cheek plate it is provide With radial strengthening ribs 7 extending nearly tothe perip ery thereof. The shaft 1 extendsy into theub 3 and is housed in the recess 5, and this end of the shaft 1 is tapered. Surroundinglthe shaft 1 withinvthe recess 5 and also within the recess 6.are journal bearings 8 for the tapered endl of the shaft 1. in s may bemade of any suitable material, eit er metal, or, if need be, of fibrous mamay occur at this point there are set-screws 9 provided extending through the offset portion of the disk'or' cheek late 4 and bearing against that 'portion of t e boxing 8 seated in' the recess 6. When the propery adjust- .nientis obtained the set-screws 9 may be held in the adjusted positionb jam-nuts 10.

The shaft 1, for a distan-ce ack of its tapered end, is formed cylindrical, as shown at 1.1, and from this portion the shaft a ain tapers vfor a distance, as shown at 12. ur-

rounding the tapered portion 12 is another boxing 13 constituting one of the supports or 1 bearings for the shaft, .and this boxing 13 has on the-lendadjacent to the portion 11 of the the boxing 13 is a sleeve or-hub 1'5 into one These vbearterial, and in order to take up any wear thaty shaft an annular flange 14. Surrounding "i section on the line y-'yv of Fig. 1; Fig. 3 is,v an,y

ment but are not'connected lother than in r en d ofwhich screwed a ya packin tent.

f seated 'in a suitable soc or lexible'strand 40. extendi lcess 39 through a suitable e oration in the f 6 5,

-these cheek bolts 23.

from the gland 16,`.and this endilange-is re# cessed, as shownat 19 to receivev the annular1 flange 14 formed on the end of theboxing 13. The flange 18 is. formed `with a cylindrical overhang 20 terminating in an annular cheek plate 21, the outer periphery of which is coperipheryof the' cheek-plate 4, and between the "two cheekextensive with the outer plates '4. and 21 is a ringl22 to which-bothof 20 there is formed a chamber.

The inner 22 is formed with two diametrically opposite recesses 25 ('see Fig. 2), proximately one Aquarter of the circumferf ential extent vof such inner periphery, but. of greater-or less ex-A these recesses may be Keyed upon the `portion 11 of'the'shaft-l by a suitable spline 26 is a drum composed of two members 27 and 28 joined by suitable screws 29, the drum'being divided into' two parts forconvenence of construction. This rum is lmade of sulicient diameter to' ex' tendl from the shaft portion- 1 1 entirely across the chamber extension 24 and for a stance between the inner facesoft'he cheek plates-4 and 21, the section 28 of [the drum being stepped or shouldered, as shown at 30,so Aas to artially enter the chamber 24. -j

ormed in the drum are a number of radial slots or recesses 31`of sufficient lateral extent to have one end wall coincident with lthe inner Wall of the cheek plate 21 and the otherend wall removed for a distance from` the inner wall of the cheek plate 4, for a Ipurp'ose which will presently appear. -Within each'radial slot 31 is seated a block 32 constitutinga wing', or .vane. Each block 32 -i`s 50 provided at its inner Aend with a central pereration 33 for a sprin 34, 'which latter is et 35 formed at 'the base of the correspoudin slot 31. Thes'ection 28 of the d 4 an interior. recessf36 havingcurved, lari' walls", and the recess 36 is connected toeac socket 3'5 bya suitable eroration-or passage 37. Leading from t e recess 36'to the exterior Vof theportion 28ofthe block is an annular series of perforations 38. In, the

outer end of leach vane/ 32 is formed anotherv recess 39. to receive the knottedend of-a cord from there- `vane32' into andv through t e' perforation 33 onding end of the boxing. eeve 15 is formed -withl an lates aresecured by screws or T ereis thus formed between the two cheek lates 4 and 21 a chamber extending-from t e-shaft 1 to the interior ofthel ring 22, and within the cylindricaloverhangside extension 24 :of thisy periphery of thewautf the ring' rum is formed with rib 54 on vth and Valso centrally through the .spring 34. vThis cord passes through-the socket 35 and into. the recess 36, around the curved wall thereof, and out throu perforationv38. 'Exterior to the drum sectlon 28 but within the chamber 24 there 1s a disk 41 mounted upon the shaft section 11 and -keyed thereto by the spline 26, but this disk is movable to and from the drum section28 upon the portion `1-1 of the shaft 1 for a distance within' the chamber 24.

' There is a cord 40 for each vane and each one of thesefcords 40 asses through and is -secured to the disk 41 y a screw 42.

The springs'34 tend to force the vanesl 32 radially outward until' they are in'en ement -with the inner peripheral wall oaie ring 22', but the extent of this outward movementof the vanes under .the action of the spri s 3 4 'is controlledby the cords40 connecte to the 'disk41. When this disk 41fis moved toward the drum the vanes are forced vradially Voutward by thev springs 34,

but when the disk 41 is moved away from `the"dr um the cords 40 pull the vanes into their seats to a corresponding extent,` and th u h-these vanes may be forced still furth r 1nto their seats by other means to be described, they will move radially outward `under the'actlon of the'springs 34 only to the extent permitted by the cords 40.

N ow, inj-order that the disk 41 may be `moved to and fro'on the shaft section 11 there areprovidedtwo diametricalln disposed bars 43' formed with engaging gers 44' on one end to embrace the edge of the disk 41, and these bars extend through erforations inthe flange 18 and are forme at gh the corresponding their ends beyond the fiange 18 with bolt extensions 45 passing through the corres onding portion of an annular flange 46 on tlie end of a sleeve 47 .movable lo 'tudinally on the exterior of the hub 15'.-l T e bolt extensions 45 of the arms 43 are secured to the flange" 46 by suitable nuts 48. The passages'through the .iange 18 rovided for the bars 43 contain packin gas ets 49 held in place by-glands 50. designed to be" moved longitudinally with reference to the hub` 15 so'as to cause the disk 41 to participate in such movement, and for this purpose the sleeve 47 is sur-` jround'e'd by a collar 51 confined between the annular flange 46 and another collar 52 securedl tothe sleeve `47 by set-screws 53. vThis collar -51 has annular ribs.- 54 formed at itsends, and the other collar .52 has an annular rib A55 coincident with the matching e corresponding' end of-the colla'r`51. The two ribs 54 and also the flange 4 6 and rib,` 55 are formed with. ball races for the reception offantifrictiOn balls 56. The collar 51- is secured toa yoke 57, best shown in Fig. 3, from which -extends an operating connection 58 to some convenient point he sleeve. 47r is (not shown) by means' `of which Vthe collar 51 may be moved to and'fro inthe plane of the axis ofthe shaft 1. The yoke 57 has its ends made fastto' the collar 51 atl diametricfl ally opposite points by suitable set-screws 59. Returning, now, .to the consideration of the ring 22 and parts coacting therewithhit will be seen from Fig:v 1 and also from Flg. 4 that this ring has aportion of its' inner periphery adjacent to the cheek` plate 4 screw-threaded as indicated 'at 60.' Threaded on to this screw-threaded portion-of the' ring 22 i's an annulus 61` formed on its inner periphery with an annular series of gear teet 62. This annulus 61 extends from the ring 22 diametrically inward for la distance suflicient to cover the outer edgeof the 'vane-carrying drum, and 'the' section 27 of this drum has an 'annular recess 63 to receive' the annulus 61.

Extending through a suitable .journal bearing formed in a boss 64' cast on the cheekplate LLis-a stud shaft 65 carrying at its inner 'e'nd a pinion 66 meshing with the vgear teeth 62 onthe annulus 61. Thev shaft 65 is made with a ta ered section 67` and this shaft is held in p ace by a bushing 68.

The outer endlof the shaft A65 is reducedy where it passesfthrough the bushing, and

. turn'edxtrue so that without undue friction practically fluid-tight Ajoints. are made vat these points. lAs the parts wear the an. nulus 61 may be adjusted from'time to time by4 turning toward the vanes and thus kept in close relationthereto. adjusted by means 4of the-.cannulus 611,'*the bushing 68 may be screwed down tight,;.thus

forcing the 'shaft 65 inward-until'its tapered section 67 is irmly seated, making affluid-` tightv joint and at the same time locking'the shaft against accidental rotation.

. Adjacent to the corresponding end of the.

recess 25 there is a struc ure,- best shown-in Fig. 6. This structure conslsts of an inclined wall or abutment 70 terminating at one end in acylindrical portion 7 1 seated in a' cylindrical sea-t formed inthe ring 22. The

other end of the wall 70 is bent atan angle,

as shown at72, and'` suitably curved yto restv snugly against the periphery'l of the `vane drum. The abutment. isV als supplied with side walls 73 having their outer faces curved' on the radius ofthe ring. One wall 73 abuts n against the cheek plate 21, while -the wall 7 0 1s provided withI a spring-retained follower 74, the springs `being shown at A75 seated in the Walls and 72.' This follower 74 per-n the handv wheel .69, when the' annulus, on beingrotated, will/be screwed' When the parts are suitably vdepending uponV the rapidit lo i "two vanes'considered, ,unti these two v anes mits adjustment. of the annulus 61 I and still maintains a tight joint. between the abutment member and said 'annulua Secured; to' the inner periphery of the ring' 22 at the edge of the recess 25 remote from the abutment or Iwall 70 is the bridge piece 76 "of a -vane race 'composed of two curved spaced arms 77 formed infone'piece with the' bridge piece 76 and at the other end'step ed,

as indicatedat 78, to enga e the edge o the' 4portion 72-of the valve. T e bridge iece 76 may berecessed into `the innerA wal ofthe rinIg 22 and there held by a screw 79.

twill be observed that the inner faces of the arms orbars 77 'constituting' the vane race are arran ed eccentrically totheaxis of-A the` shaft 1. ow, let it be assumed that the s ace between the periphery ofthe vane rum and the inner periphery of the ring-22 is filled -with o'il or other fluid, oil being preferred, then-when-the vanes are rotated this rotation is res'istedby the oil with whichl the vanes are vbrought into contact.' Suppose,-

now, that the vanes are permitted to make contact with the inner periphery of the ringv .22 and that-the parts are in about the' position `shown in Fig. 2.' Also,` that the shaftis 'rotating in the "'directionrindicated by the arrowin 'Fig.`2, that is, it is rotating counter'- clockwise as viewed in such `figure. The two vanes corresponding in positlon tothe four and ten oclock p'ositions of av clock faceare in direct engagement with the inner wall of the ring 22 and the oil between these vanes 4and the wall 70 is subjected to'compression ioo stress, but, being 'for vall practical purposes ,non-:com ressibl'e 'and having no meansof' escape, t is oil acts the same as thoughl there l were a solid connection between thesel two Vvanesv andthe two'wall's or abutments. r The result of this lis that the ring 22 must parvanes-,'\v and, consequently',.th'e driven shaft 2 thereis aeertain amount of. leakage `past 'ticipelte .in the@ rotative' 4movement of' the `will becaused. t'o rotateat 'the same speed as' the drive shaft 1. -Suppose,' again, that thesetwo vaneslocated at the fourand ten vocloek positions,veither because lof thexill-f fitting of the parts or b'ecausethe `disk'41ha's been so adjusted'that these two vanes,V or', in'

fact, any of the vanes,'will not become sea-ted 'againstthe .inner wall of the ring 22.' The j vresult.of'th'isleak will be that the shaft 1 will j l forge'ahead of the shaft 2,;slowli'ypor quickly, f eak past' the reach the vane race formed by the two arms 77.-. v.From this point Yonward the 'lleak passage is'jlargely augmented,l while thenex't two. varies in order, namely,those shownf in Fig.

Zasat'the six and twelve ofclock positions,`

Ahave .beerrcaused toffride up the `inclined walls 70'untilthey have reached the outerl most extent of their travel under the impulse `of the springs 'Now this second pair'of the oil.A

in this oi arms. As the relative rotation of the vane drum progresses the' first considered pair of vanes will ultimately reach the six and twelve oclock positions and will then be, for

the time being, out of action, to again. come into active operation as soon as they have Aprogressed far enough to pass' up -the inclined walls of the valves. A

In the foregoing description the continued rotation of the ring 22 has not been taken into account and the operation has been described as though this ring remained still in s ace, but it will be remembered that while these various operations have. been taking place the resistance of the oil in its assage around the vanes has reacted upon -t e ring to cause its rotation, and the speed of rotation of this ring will depend upon the throttling effect-of the vanes upon the passage of When the vanes are fully withdrawn into their seats the rotation of the ring 22 and of the shaft 2 connected therewith, is zero, while the projection of the vanes radially outward from their seats may be so regulated as to cause an accelerated rotation of the shaft 2 .from the zero positionl up to the same speedias the shaft 1.

In order to utilize the pressure within the "oilchamberand to compensate for .variations therein,- there is secured exterior to the cheek plate 21 a cylinder 80 screwed into a collar 81 provided with a nip le 82 which, in turn, is screwed into the c eek plate 21 and is put into communication with the oil 'chamber through a duct 83, indicated in dot'- ted lines in Fig. 1. The collar is provided with an interior flange 84 between which and the end of the cylinder 80 is clam ed one endof a flexible container 85, the ot er end of which is closed and has secured to it a weight 86. The end of the collar 81 remote from that to which the cylinder 8O is connected is closed by a screw-plug 87. Oil is introduced into theflexiblecontainer 85,

which may bemade of leather or other suitable material, after which the plug 87 is screwed down tight into place. the rotation of the structure in the direction of the arrow, the tendency of the wei .ht 86 is to collapse the flexible structure an force theoil therein into the oil chamber between the cheek lates. If, however, the ressure chamber becomes su ciently great, oil will flow backward .into-the container -and the pressure will thereby be relieved to that extent, but if the pressure Now, on'

` will cause the oil to flow again into the chambei". There is thus provided an equalizing means by which the normal pressure of the oil is maintained sensibly constant and shocks or jars are avoided, and the structure also provides an elastic means by which the harmful effects of overloads are avoided.

' It is desirable that the connection of the relief mechanism be as near a neutral point as possible, and, therefore, it should be placed adjacent to one of the valves.

ile I have used'oil as an example of the iiuid medium employed in the power transmission device, it is to be understood that water or glycerin or any other suitable fluid may be used with like effect.

I claim 1. A power transmission device comprising a drive member, a vane drum fast thereon, radial seats formed in the drum, vanes in said seats, s rings housed in said seats and tending to orce the vanes outwardly, and connections'between the vanes, and a common actuating member for said connections.

2. A power transmission device comprising a drive member, a vane drum fast thereon, radial'seats formed in said drum, vanes in said seats, springs housed in said seats and actin on the vanes to drive them outwardly, and exible connections fast to the vanes and passing through the seats, and an actuating member for the flexible connections common to all of them.

3. A power transmission device com rising a drive shaft, a driven shaft, a iiiiidcontainer-on the driven shaft, a vane carrier onthe drive shaft, radially-'movable vanes on said carrier, springs tending to force the vanes radially outward, exible connections engaging said vanes to move them radially inward, means for diverting the course of the flexible' connections to a direction parallel to the drive shaft, and a common actuating lmeans for all the flexible connections movallll in the direction of the length of the drive s a t.

4., A power transmission device com ris- -ing a drive shaft, a driven shaft, a uidcontainer carried by said driven shaft, radially-movable vanes carried upon the drive shaft, and adjusting means movable laterally into engagement with the .sides of the vanes vfor taking up side wear of said vanes. 5. A power transmission device com irising a drive shaft, a driven shaft, a uidcontainer carried by said driven shaft, radially-movable vanes carried u on the drive shaft, and adjusting means or taking up side wear of the vanes, comprising an annulus provided with exterior screw-threads engaging other screw-threads on the fluidcontainer and provided with gear teeth on its inner periphery, a pinion, and means for operating the same, said pinion engaging the shaft. 1

7. A power .transmission device comprising a drive shaft, a driven. shaft, a fluid-v container on the driven shaft, vanes carried by thedrive shaft, and a yielding relief chamber connected to the fluid-container and comprising arigid receptacle, a exible receptacle therein, and a Weight acted upon by centrifugal force for collapsing the Henrible receptacle.

8. A" power transmission device comprising a -drive shaft, a driven shaft, a cylin- 'dricalfluid-container carried by the driven shaft, radially-mvable vanes carried by the drive shaft, eccentricvane races in the container tending to v move thevanes radially lnward, and abutments arranged on the interior of the fluid-container at the points of least internal diameter thereof and coincident `with the inner ends of the eccentric In testimony that I claim the foregoing as my own, I have hereto 'affixed my signature in the presence of two witnesses.' l

Y CARL A.. SCHLACHTER.

Witnesses:

E. C. STEvENsoN, NANCY L. STEvENsoN. 

